Recent content by jdcook

  1. J

    no spark.......driving me crazy

    recently rebuilt 88 gm 4.3 v6. It goes in a 91 glasstream. We got the engine back in the boat, got everything hooked back up. Now we cannot get any kind of spark at all. We tested and we have power to the coil, and a new coil wire. the wiring harness is connected, and all wires are hooked...
  2. J

    won't shift........help

    just got thru putting engine back in boat last night, finally. <br />today we put the lower unit back on and now the shifter will not shift out of foward. it will come all the way up but it won't quite go into neutral, i didn't want to force it and now i don't know what to do. <br />any...
  3. J

    what spark plug should i use

    I have a 4.3l v6 that I have been running, and I have been using ACMR43T plugs in it. However this year we added new cam, rocker arms, intake manifold and a 4 bbl carb. My question is should I run a hotter plug than the 43T, I was thinking 44T or even a 45T. <br />any suggestions
  4. J

    volvo outdrive question

    i am trying to help a buddy of mine change the lower unit oil on his boat. he has a 1992 larson with a volvo penta outdrive, we found the lower drain plug, but the we cant find the upper one, can someone tell me where to look :confused: <br />i hope this makes sense!!
  5. J

    carb cfm?

    I am looking for a new carb for my boat, 1988 gm 4.3l v6. just upgraded the cam, manifold, intake etc (added about 40-50 hp). I need to add a 4 bbl carb, found one on ebay but it is a 750 cfm, I am thinking that this is too big, am I right. :confused:
  6. J

    engine re-mounting

    getting ready to put engine back in boat after re-build, if engine goes back on origional mounting bolts, do i have to worry about re-alighning the engine, if i do what is the best way to do it.<br />thanks
  7. J

    edelbrock carb?

    i have a chance to get a new edelbrock 4 bbl carb for a goooood price. it is not a marine carb, the ? is can anything be done to it to make it okay for marine use?
  8. J

    rpm for alhpa 1

    how many rpm can an alpha 1 outrive handle on a constant basis<br />thanks
  9. J

    adding hp

    I've decided after much debate to have my engine re-built (88 gm 4.3l v6). I know a guy who rebuilds both car and boat engines. He told me that he could add 50-60 hp depending on how much $ i wanted to spend.<br />I was wondering if anyone else has had this done and what the pros/cons were...
  10. J

    v6 power up

    I have been considering changing the engine my boat, but after thinking about it and getting some opinions I think that i will try to beef up my current engine. its a 1988 GM 4.3l v6.<br />my question is what are some ways that i can accomplish this. I would like to do whatever i can to...
  11. J

    engine swap ?

    I have a 1991 glassstream 21' oben bow ski boat.<br />It has a 4.3l v6 175 hp with a merc alpha one outdrive. I feel like this boat is underpowered and I want to put a 350 in it. I know someone who can put it in for me, so labor costs are not a problem. My question is what all do I need to...
  12. J

    I need help!!!!!

    First of all..I have a 88' merc 4.6l v6 175hp, thunderbolt IV idgnition. <br />Please bear with me........<br />About a month ago I got my boat out and put my muffs on it to warm it up before I headed to the lake, stated just fine. Pulled the boat 30min to lake, backed it down the ramp and it...
  13. J

    Tach test

    My 88' merc 4.3l seems to be idleing at a lower rpm than my tach is reading, is there an easy way to check your actual rpm, or test the accuracy of your tachometer?
  14. J

    Idle RPM

    Its a 88' merc 4.3l v6 175 (GM6269732). I have a manual but I cannot find where it says what the rpms should be at idle. <br />Also, does anyone know if this engine would have an hour meter on it, i can't find one.
  15. J

    water leak

    I have a 1992 glasstream with a 4.3L merc., alpha one.<br />I took the boat out last weekend and in about 1 hour i had about 5 gallons of HOT water in the engine compartment. :eek: When I pulled the boat out of the water i could not see whee it was coming from. <br />If it was coming from...
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